CN201195972Y - Theft-proof lock core - Google Patents

Abstract

The utility model relates to an anti-theft lock cylinder, the lock cylinder is installed in the inner of a lock outer shell, a lock cylinder sleeve is sleeved on the lock cylinder, a lock plunger is arranged on the end of the lock cylinder sleeve, a multiple rows of marble holes are correspondingly arranged on the lock cylinder sleeve and the lock outer shell, and at least three marbles are arranged in each row of the marble holes. When unlocking the anti-theft lock cylinder of the utility model, since the lock only can be opened through pulling out marbles which connect the lock cylinder sleeve and the lock outer shell, thereby the difficulty of unlocking the lock by a master key is increased in certain degree, and the lock cylinder plays the anti-theft function in certain degree.

Description

A kind of anti-theft lock

Technical field

The utility model relates to a kind of lockset, particularly a kind of anti-theft lock of using improper instrument to unblank of preventing.

Background technology

The lock core of present most of lockset all is to put into from the front end of shell, by rotating or promote that lock core unblanks, as long as the pellet shot from a slingshot that will connect between lock core and the shell with master key is pushed aside, just can unblank easily, and anti-theft effect is undesirable.

The utility model content

Technical problem to be solved in the utility model provides a kind of lockset of good anti-theft effect.

The utility model addresses the above problem with following technical scheme: be installed in and be with lock core cover 1 on the lock core 3 of locking shell 4 inside, lock core overlaps 1 termination locking bolt 7, lock core 3, lock core cover 1 and lock shell 4 correspondences have number row pellet shot from a slingshot hole, and every row's pellet shot from a slingshot is equipped with three pellets shot from a slingshot in the hole at least.

Bound by lock core and do not exposed in the outer end of described lock core cover.

Because anti-theft lock of the present utility model is provided with the lock core cover, when unblanking, the pellet shot from a slingshot between connection lock core cover and the lock shell must be pushed aside just and can be opened lock, therefore, give and use master key to unblank to increase certain unlocking difficulty, thereby play certain anti-theft effect.

Description of drawings

Fig. 1 is the structural representation of the utility model anti-theft lock.

The specific embodiment

As shown in Figure 1, be installed in and be with lock core cover 1 on the lock core 3 in the lock shell 4, lock core overlaps 1 termination to be had and backs down the locking bolt 7 that dead bolt is unblanked, be provided with keyhole 2 in the lock core 3, lock core 3, lock core cover 1 and lock shell 4 correspondences have number row pellet shot from a slingshot hole, be placed with three pellets shot from a slingshot 6 and 5, three pellets shot from a slingshot of a spring in every row's pellet shot from a slingshot hole and place lock core, lock core cover and lock shell respectively, the length of each pellet shot from a slingshot is all inequality; Pellet shot from a slingshot in the lock core contacts with the key of unblanking; During locking, have at least a pellet shot from a slingshot to connect lock core cover and lock shell.

When normally unblanking, the key of will unblanking inserts in the keyhole, the pellet shot from a slingshot that key is about to connect between lock core cover and the lock shell of unblanking backs down, the lock core cover is connected with lock shell non-marble, and have pellet shot from a slingshot to be connected between lock core cover and the lock core, rotate the key of unblanking again, can drive lock core and lock core cover and rotate simultaneously, thereby the locking bolt that lock core is put rotates and backs down dead bolt and unblank.

Owing to be provided with the lock core cover between lock core of the present utility model and the lock shell, and must the rotation lock core retainer plate when unblanking, therefore, when unblanking with master key, at most the pellet shot from a slingshot that connects between lock core and the lock core cover can only be backed down, and the pellet shot from a slingshot that can not will connect again easily between lock core cover and the lock shell backs down, therefore, unblank to have increased certain degree of difficulty to the lawless person, play certain antitheft effect.

Marble amount in every row's pellet shot from a slingshot of the present utility model hole also can be more than three.

Claims (2)

1. anti-theft lock, be installed in the lock enclosure, it is characterized in that: be with lock core cover (1) on the lock core (3), there is locking bolt (7) lock core cover (1) termination, lock core (3), lock core cover (1) and lock shell (4) correspondence have number row pellet shot from a slingshot hole, and every row's pellet shot from a slingshot is equipped with three pellets shot from a slingshot in the hole at least.

2. anti-theft lock according to claim 1 is characterized in that: bound by lock core and do not exposed in the outer end of described lock core cover (1).